Punch-press.



G. A. CARLSOIL PUNCH PRESS.

APPLICATION FILED NOV. 25, 1912.

1,077,668 Patented N0v.4,1913.

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G. A. GARLSON.

PUNCH PRESS.

APPLICATION FILED 1011.25, 1012.

1,077,668. Patented Nov. 4, 1913.

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PUNCH-PRESS.

Specification of Letters Patent.

Patented Nov. 4, 1913.

Application filed November 25, 1912. Serial no. 733,392.

Totall whom it may concern Be it known that I, 'Onanrns A. CARLSON, acitizen of the United States, and "a resident of the city of BlueIsland, county of Cook, and State of Illinois, have invented certain newand useful Improvements in Punch- Pre'sse's, of which the following is aspecification.

My invention relates to improvements in punch presses and has for itsobject the provision of a punch press so designed and constructed as tofacilitate the ready employment of punches of various sizes.

The invention consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which,

Figure 1 is a side elevation, partially in section, of a punch pressembodying my invention, Fig. 2, a section taken on line a30a of Fig. 1,Fig. 3, a section taken on line y-y. of Fig. 1, Fig. 4:, a face view ofone of the punch members employed in the construction, and Fig. 5, aface view of an operating system of levers employed in the construction.

The preferred form of construction as illustrated in the drawingscomprises a suitable frame or bracket 1 having lugs 2 by means of whichit may be secured to a wall or other suitable support. A rotatable head3 is rotatably mounted in frame 1 by means of a central bolt 4:, asshown. This head 3 carries a plurality of punch members, each of saidpunch members comprising a reciprocatory plunger 5 mounted toreciprocate 4o vertically in a guide head 6 and provided with a studscrew 7 projecting through a guide slot 8 in the face of guide head 6,as shown, said stud screw serving to prevent rotation of said plunger inits guide head.

A spring 9 is secured to the face of each of the heads 6 and engagesstud screw 7 to hold the corresponding plunger 5 in elevated or normalposition.

The punch proper 10 is secured in the bottom of each of the plungers 5and cooperates with a die 11 adjustably secured in a suitable seat 12 onthe frame 1 by means of adjusting screws 13. A suitable stripper 10 isalso provided for each of the plungers.

At its upper end, each of the plungers is provided with a circular knobor extension 14; which is adapted to swing into engagement with a jaw 15as head 3 is rotated, said jaw being so shaped as to permit of thepassage of the circular knob therethrough laterally but to interlocksaid knob for vertical movement thereof. This jaw is carried at thelower end of a :link 16 connected with a bell crank 17 mounted in frame1,

as indicated, and said link normally rests 5 against a guide stop 18which holds said jaw 15 in proper position for lateral engagement by thedifferent knobs 14. Bell crank 17 is connected by means of links 19 witha hand lever 20 which is pivotally 7 mounted at 21 in frame 1. By thisarrangement, it will be observed, that a powerful leverage may beexerted upon a punch plunger operatively connected with jaw 15, and thatthe different punch plungers may be readily placed in operative relationwith jaw 15.

The punches 10 are made of difierent sizes and may be readily removedand replaced so that this construction afi'ords a so simple andeffective means for readily punching difierent sized holes.

A spring-held locking pin 22 is mounted in the lower portion of frame 1under the system of operating levers, and rotatable head 3 is providedwith a locking opening 23 located under each of the die seats 12 forcooperation with said locking pin, to lock said head in proper positionto facilitate operation of the different punches by means of so thesystem of levers shown.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

1. A punch press comprising a frame; a set of compound levers pivot-edin said frame; a connecting link operatively connected with saidcompound levers; an arm on said frame engaging the lower end of saidconnecting link assisting in maintaining the latter inclined when innormal condition; and a revoluble holder mounted in said frame andcarrying a plurality of punch press elements each of which is adapted toengage and be operated by said connecting link, substantially asdescribed.

2. A punch press comprising a frame; a bell crank lever pivoted in saidframe; a lever pivot-ed in said frame and operatively connected withsaid bell crank lever, said lever and bell crank lever being formed toengage each other and define their normal positions at one terminal oftheir movements; a connecting link connected with one arm of said bellcrank lever; an arm on said frame and engaging the under side of saidconnecting link maintaining the latter nor- 15 mally in inclinedposition; and a revoluble holder mounted in said frame and carrying aplurality of punch press elements each of which is adapted to engage andbe operated by said connecting link, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

- CHARLES A. GARLSON.

Witnesses:

JOSHUA R. H. Poms, ARTHUR A. OLSON.

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

